文章摘要
陶健全,向林,李晓松,等.真空增压铸造工艺对ZL114A合金充型能力和力学性能的影响[J].精密成形工程,2020,12(4):166-170.
TAO Jian-quan,XIANG Lin,LI Xiao-song,et al.Effect of Vacuum Pressurized Casting Process on Filling Ability and Mechanical Properties of ZL114A Alloy[J].Journal of Netshape Forming Engineering,2020,12(4):166-170.
真空增压铸造工艺对ZL114A合金充型能力和力学性能的影响
Effect of Vacuum Pressurized Casting Process on Filling Ability and Mechanical Properties of ZL114A Alloy
投稿时间:2020-05-12  修订日期:2020-07-10
DOI:10.3969/j.issn.1674-6457.2020.04.021
中文关键词: 真空增压  ZL114A  流动性  显微组织  力学性能
英文关键词: vacuum pressurized  ZL114A  fluidity  microstructure  mechanical properties
基金项目:
作者单位
陶健全 中国兵器工业第五九研究所重庆 400039 
向林 中国兵器工业第五九研究所重庆 400039 
李晓松 中国兵器工业第五九研究所重庆 400039 
邢志辉 中国兵器工业第五九研究所重庆 400039 
李明 中国兵器工业第五九研究所重庆 400039 
摘要点击次数: 2440
全文下载次数: 1579
中文摘要:
      目的 研究不同真空增压铸造工艺参数下ZL114A合金的充型距离、组织性能的变化规律。方法 设计了不同厚度的充型距离测试片,采用游标卡尺测试了不同真空度和石膏铸型温度条件下合金的流动性。采用万能拉伸机测试了不同凝固压力条件下单铸试棒的力学性能,采用金相显微镜观察合金的显微组织,采用扫描电子显微镜观察拉伸断口的形貌。结果 当真空度从重力状态(0 MPa)提高至-0.08 MPa时,3.0 mm薄片的充型距离从42 mm提升至210 mm。当铸型温度从260 ℃提高至340 ℃,3.0 mm薄片的充型距离从95 mm提升至175 mm。凝固压力从重力条件下提升至0.8 MPa,抗拉强度从293 MPa提升至338 MPa,屈服强度从240 MPa提升至278 MPa,断后伸长率从2.0%提升至4.0%。结论 提高真空度、铸型温度,可显著提升ZL114A合金的充型能力。提高凝固压力、凝固组织致密,第二相分布均匀,疏松缺陷明显减少,力学性能提高。
英文摘要:
      The paper aims to study the variation law of filling distance and microstructure and properties of ZL114A alloy under different vacuum pressurized casting process parameters. The filling distance test pieces of different thickness were designed. The fluidity of the alloy under different vacuum and gypsum mold temperature conditions were tested by vernier caliper. The universal tensile machine was used to test the mechanical properties of single-cast test bars under different solidification pressures. The metallographic microscope was used to observe the microstructure of the alloy, and the scanning electron microscope was used to observe the morphology of the tensile fracture. The results showed that when the vacuum degree was increased from the gravity state (0 MPa) to -0.08 MPa, the filling distance of the 3.0 mm sheet was increased from 42 mm to 210 mm. When the mold temperature was increased from 260 ℃ to 340 ℃, the filling distance of the 3.0 mm wafer was increased from 95 mm to 175 mm. The coagulation pressure was increased from gravity to 0.8 MPa; the tensile strength was increased from 293 MPa to 338 MPa; the yield strength was increased from 240 MPa to 278 MPa; and the elongation after fracture was increased from 2.0% to 4.0%. Increasing the vacuum and mold temperature can significantly improve the filling ability of ZL114A alloy, and increase the solidification pressure. The solidification structure is dense. The second phase is evenly distributed. The loose defects are significantly reduced, and the mechanical property is high.
查看全文   查看/发表评论  下载PDF阅读器
关闭

关于我们 | 联系我们 | 投诉建议 | 隐私保护 | 用户协议

您是第12080959位访问者    渝ICP备15012534号-6

>版权所有:《精密成形工程》编辑部 2014 All Rights Reserved

>邮编:400039 电话:023-68679125传真:02368792396 Email: jmcxgc@163.com

>    

渝公网安备 50010702501719号